Her classmates were always intimidated by her height, hence she received the nickname of "Big Sister" for sixteen years. But this is far from the truth! She not only is a coward who doesn't dare to say what's on her mind, she's also super scared of horror movies! Like every girl in love, for the sake of the guy she likes, she volunteered to be on the committee of the school's cultural festival.
Unfortunately, her class then chose "haunted house" as their theme; how will she get through this now?